aiccu: not available on NIOS II

Building aiccu does not work on NIOS II due to the _gp problem, and
nobody is interested to fix it for now, so we simply disallow this
package. While we're at it, we propagate the AVR32 exclusion to the
comment.

Fixes:

  http://autobuild.buildroot.net/results/786/7864cd5789a9f9b9f0603d738f4e63822d8469dd/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/aiccu/Config.in

@@ -11,6 +11,8 @@ config BR2_PACKAGE_AICCU
 	# due to the lack of dn_skipname(), even with external
 	# toolchains.
 	depends on !BR2_avr32
+	# Triggers the _gp link issue
+	depends on !BR2_nios2
 	select BR2_PACKAGE_GNUTLS
 	help
 	  SixXS Automatic IPv6 Connectivity Client Utility
@@ -29,3 +31,5 @@ config BR2_PACKAGE_AICCU
 comment "aiccu needs a toolchain w/ IPv6, wchar, threads"
 	depends on BR2_USE_MMU
 	depends on !(BR2_INET_IPV6 && BR2_USE_WCHAR && BR2_TOOLCHAIN_HAS_THREADS)
+	depends on !BR2_avr32
+	depends on !BR2_nios2